Craniofacial Morphology of Class II Division 1 Nepalese Population

Introduction: Class II Div 1 is a deviation from normal occlusion and may arise from combination of di" erentcraniofacial components.The objective of this study was to findnd out the different possible dental and skeletalcomponents that lead to Class II Div 1 malocclusion in Nepalese population.Methods: The lateral cephalogramradiographs consisted of 30 males and 30 females between the age group of 18 to 32 years. All the radiographswere traced with hand on acetate paper sheets. All the landmarks were identified, located and marked. Steiner’s analyses and McNamara analysis were done for the cephalometric measurements. The mean valueswere obtained and were compared with the established available values of the Nepalese and Caucasian normsusing independent t-test.Results: Size of the mandible was found to be lesser than the established normalvalues. Prognathic maxilla with retrognathic upper incisors and retrognathic mandible with proclined lowerincisors and was found to be the most common combinations of Class II Div 1 component.Conclusion: Size of the mandible is less than the normal value which is the main cause of the Class II Div 1 pattern in Nepalese population. Medical Journal of Shree Birendra Hospital; July-December 2012/vol.11/Issue2/10-13 DOI: http://dx.doi.org/10.3126/mjsbh.v11i2.7901

Download Full-text

A Comparative Study of Arch Widths of Bangladeshi Subject with Normal Occlusion and Class II Division 1 Malocclusion

Bangladesh Journal of Orthodontics and Dentofacial Orthopedics ◽

10.3329/bjodfo.v2i2.16159 ◽

2013 ◽

Vol 2 (2) ◽

pp. 18-23

Author(s):

MM Islam ◽

MZ Hossain

Keyword(s):

Comparative Study ◽

Class Ii ◽

Class I ◽

Dental Arch ◽

Class Ii Malocclusion ◽

Normal Occlusion ◽

Division 1 ◽

The Mean ◽

Dental Crowding ◽

Class Ii Division 1

Aim: To evaluate possible differences of the upper and lower dental arches width among youths with Class I,normal occlusion and Class II, division 1 malocclusion. Materials and Methods: The evaluation was conducted on 100 pairs of dental casts of Bangladeshi youths with permanent dentition, 50 with Class I, normal occlusion (22 males and 28 females) at the mean age of 19±3 years and 50 with Class II, division 1, malocclusion (18 males and 32 females ) at the mean age of 20±4 years. The group with Class II malocclusion was divided into two categories: Class II without dental crowding and Class II with dental crowding. A comparison was made between the intercanine inter first premolar and intermolar widths of both dental arches. Results: Subjects with Class II, division, 1 malocclusion when compared with Class I normal occlusion presented (a) in the upper dental arch , smaller intermolar, interpremolar and intercanine width. (b) in the lower dental arch , smaller intermolar width. DOI: http://dx.doi.org/10.3329/bjodfo.v2i2.16159 Ban J Orthod & Dentofac Orthop, April 2012; Vol-2, No.2, 18-23

Download Full-text

Perbedaan Analisis Sefalometri Skeletal Sebelum dan Sesudah Perawatan Alat Myofunctional pada Pasien Maloklusi Dentoskeletal Kelas II Divisi I dalam Masa Pertumbuhan dengan Metode Steiner

Majalah Sainstekes ◽

10.33476/ms.v4i2.906 ◽

2019 ◽

Vol 4 (2) ◽

Author(s):

Nugroho Ahmad Riyadi

Keyword(s):

Orthodontic Treatment ◽

Class Ii ◽

T Test ◽

Analytic Study ◽

Statistic Analysis ◽

Twin Block ◽

Normal Occlusion ◽

Division 1 ◽

Before And After ◽

Class Ii Division 1

The aim of orthodontics treatment is normalization of teeth position in three planes, using various orthodontics appliance to reach the chepalometric standar and normal occlusion. Orthodontic treatment for dentoskeletal class II division 1 malocclusion in growing patients using myofunctional appliance may correct anteroposterior planes of mandibula. This study was a descriptive retrospective analytic study to look at the success of Orthodontic treatment for dentoskeletal class II division 1 in growing patients with myofunctional appliance using chepalometrics analysis Steiner value. The sample used in this study is chepalogram radiographic from patient with dentoskeletal class II division 1 malocclusion in growing patients before and after using myofunctional appliance in PPDGS orthodontics Clinic of Padjadjaran University. Statistic analysis were performed with pair t-test and Wilcoxon. Based on this study, it is concluded that orthodontic treatment with myofunctional appliance such as activator and twin block in growing patient with dentoskeletal class II division 1 malocclusion shows significant changes and compatibility with the normal criteria.

Download Full-text

Evaluation of tongue posture & dimensions in relation to skeletal Class I and Class II patterns- A cephalometric study

International Journal of Oral Health Dentistry ◽

10.18231/j.ijohd.2021.054 ◽

2021 ◽

Vol 7 (4) ◽

pp. 276-281

Author(s):

Puja Khanna ◽

Sumit Chhabra ◽

Preeti Munjal ◽

Sunny Mittal ◽

Nishtha Arora

Keyword(s):

Statistical Tests ◽

Class Ii ◽

Class I ◽

Control Group ◽

Skeletal Class ◽

Normal Occlusion ◽

Division 1 ◽

Skeletal Pattern ◽

Bonferroni Test ◽

Class Ii Division 1

Association of tongue posture with dental and facial skeletal pattern have been suggested in past. This study was undertaken to assess tongue posture and dimensions in Class I and Class II Dentoskeletal patterns to determine whether any correlation exists between tongue posture and skeletal pattern of an individual. Cephalograms of 150 individuals (aged 18-23 years), taken in Natural Head Position (NHP) and tongue at rest were divided into three groups i.e. Group 1 – Class I Normal occlusion, Group 2 – Class II Division 1 Normodivergent and Group 3 – Class II Division 1 Hypodivergent, consisting of 50 samples each. To ensure the rest position of tongue, patient was asked to relax for 30 seconds after coating the tongue with barium sulphate in midline and then to swallow, and the X-ray was taken at the end of swallowing. Each group was divided into two subgroups according to sex. Groups were constituted according to the Frankfort mandibular plane angle (FMA) angle. The subjects who had skeletal Class II pattern due to mandibular retrusion and not due to maxillary prognathism were only included in the study group. Statistical analysis was done using the software SPSS version 21.0. The statistical tests used were unpaired t-test and One-way ANOVA test with post-hoc bonferroni test. The p-value was considered significant if less than 0.05.The dorsum of the tongue was higher at back and lower in front in Class II Division 1 Hypodivergent group as compared to Class I Normal occlusion group (P<.05). Tongue height and tongue length were significantly reduced in Class II Division 1 Normodivergent and Class II Division 1 Hypodivergent malocclusion groups when compared to Class I control group (P<.05).The study supports the existence of a relationship between posture & dimensions of the tongue with Class I and Class II skeletal patterns.

Download Full-text

Craniofacial Morphology of Japanese Girls with Class II Division 1 Malocclusion

Journal of Orthodontics ◽

10.1093/ortho/28.3.211 ◽

2001 ◽

Vol 28 (3) ◽

pp. 211-216 ◽

Cited By ~ 16

Author(s):

Nobuyuki Ishii ◽

Toshio Deguchi ◽

Nigel P. Hunt

Keyword(s):

Class Ii ◽

Craniofacial Morphology ◽

Division 1 ◽

Class Ii Division 1

Download Full-text

Computed Tomography Evaluation of Craniomandibular Articulation in Class II Division 1 Malocclusion and Class I Normal Occlusion Subjects in North Indian Population

ISRN Dentistry ◽

10.5402/2012/312031 ◽

2012 ◽

Vol 2012 ◽

pp. 1-5 ◽

Cited By ~ 1

Author(s):

K. C. Prabhat ◽

Sanjeev Kumar Verma ◽

Sandhya Maheshwari ◽

Ibne Ahmad ◽

Mohd. Tariq

Keyword(s):

Computed Tomography ◽

Indian Population ◽

Class Ii ◽

Class I ◽

Spiral Computed ◽

Computed Tomography Images ◽

Normal Occlusion ◽

Division 1 ◽

Joint Morphology ◽

Class Ii Division 1

Objective. The purpose of this study is to investigate the Craniomandibular articulation morphology and position of condyle in mandibular fossae in Angle’s class I normal occlusion and Angle’s class II division 1 malocclusion. Materials and Methods. The present study was conducted on 40 subjects with 20 subjects in each group, and the computed tomography images were obtained using spiral computed tomography technique. Each measurement was compared by two-factor analysis of variance (ANOVA) while changes in anterior and posterior joint spaces were done by paired t-test. Results. Statistically significant anterior positioning of condyle was observed in class I normal malocclusion, and it was significant only on right side in class II division 1 malocclusion. Conclusions. There was no difference found in the condylar process and joint morphology between right and left sides of both Angle’s Class I normal occlusion and Angle’s class II division 1 malocclusion. Evaluation of the position of the condyles in their respective mandibular fossae showed concentric position with a tendency towards anterior positioning for both right and left sides of the subjects with Angle’s Class I normal occlusion as well as subjects with Angle’s class II division 1 malocclusion.

Download Full-text